Nevada's largest cactus collection stands outside a candy mogul's small factory.

Flashy signs from Las Vegas’s past find their final resting place at this unusual graveyard.

This glamorous old building is said to have inspired the Tower of Terror.

The history of the tea trade is told in bas-relief on this historic pair of Boston doors.

The American Revolution was galvanized into serious action due to the tragic clash with British soldiers that occurred at this location.

Two thousand artifacts from around the world collected by one woman who loved to travel.

An enormous, inside-out glass globe built in 1935.

Golden and naked, the figure that was once the highest point in New York is all that remains of the second Madison Square Garden.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

The world’s first penitentiary, meant to be humane, drove men insane.

This Art-Deco movie palace is the oldest independent cinema in Atlanta.

Proceeds from this colorful teahouse in a historic Atlanta neighborhood directly fund women’s education in northeast India.

This angular brutalist playground turns playtime into modern art time.

One of corporate America's best-kept secrets is also one of the most publicly displayed.

Civil War soldiers, captains of industry, and paupers all interred on historic grounds.

An underground magnet for ever-changing street art.

This massive store is home to an eccentric collection of vintage, retro, and peculiar goods.

A dazzling display of lights and crystals.

The only depiction of Abraham Lincoln holding a weapon, and the names of all 9,000 Cuyahoga veterans of the Civil War.

Marvel at this turn-of-the-century masterpiece that has been turned into a rather stately supermarket.

Funded by John D. Rockefeller, this is one of the earliest, and most beautiful, shopping arcades in America.

Inside this library, the history of Los Angeles is retold through a mural.

There are lots of hands and feet stamped in the cement in front of Grauman’s Chinese Theater, but Mel left behind something extra.

The blinking light atop the iconic landmark has been sending secret messages for decades.